Climate and monthly weather forecastSouth Plainfield, NJ
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in South Plainfield, New Jersey, with an average temperature ranging between min 23.9°F (-4.5°C) and max 36°F (2.2°C). South Plainfield witnesses the coldest weather in January, with temperatures averaging a high of 36°F (2.2°C) and a low of 23.9°F (-4.5°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in South Plainfield, New Jersey, with an average temperature fluctuating between 39.2°F (4°C) and 25.7°F (-3.5°C). Transitioning from January to February, South Plainfield observes an average high-temperature of a still cold 39.2°F (4°C), differing subtly from the previous month. Weather in February »Weather in March
March, the first month of the spring in South Plainfield, is a frosty month, with an average temperature fluctuating between 47.3°F (8.5°C) and 32.9°F (0.5°C). South Plainfield in March experiences a slight uptick in the average high-temperature, adjusting from February's cold 39.2°F (4°C) to a chilly 47.3°F (8.5°C). Weather in March »Weather in April
April in South Plainfield, New Jersey, is a moderate spring month, with temperature in the range of an average low of 43.3°F (6.3°C) and an average high of 59°F (15°C). April witnesses an increase in the average high-temperature, moving from a chilly 47.3°F (8.5°C) in March to a moderate 59°F (15°C). Weather in April »Weather in May
May, the last month of the spring in South Plainfield, is an agreeable month, with an average temperature varying between 52.9°F (11.6°C) and 69.3°F (20.7°C). As May begins, there is an increase in the average high-temperature, moving from a moderate 59°F (15°C) in April to an agreeable 69.3°F (20.7°C). Weather in May »Weather in June
June, the first month of the summer in South Plainfield, is a moderately hot month, with temperature in the range of an average low of 60.6°F (15.9°C) and an average high of 77.5°F (25.3°C). The shift from May to June is marked by a slight increase in the average high-temperature, moving from a pleasant 69.3°F (20.7°C) to a moderately hot 77.5°F (25.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in South Plainfield, New Jersey, with an average temperature varying between 67.5°F (19.7°C) and 84.2°F (29°C). Temperature records mark July as the warmest month, with highs averaging 84.2°F (29°C) and lows at 67.5°F (19.7°C). July's average heat index is calculated to be a tropical 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in South Plainfield, New Jersey, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 82°F (27.8°C). August welcomes an average high-temperature of a still warm 82°F (27.8°C), not much different from the preceding month. Weather in August »Weather in September
September, the first month of the autumn in South Plainfield, is also a moderately hot month, with an average temperature ranging between max 75.4°F (24.1°C) and min 59.4°F (15.2°C). September signifies a gentle decline in South Plainfield's average high-temperature, easing from 82°F (27.8°C) in August to a still moderately hot 75.4°F (24.1°C). Weather in September »Weather in October
October, like September, in South Plainfield, New Jersey, is another enjoyable autumn month, with an average temperature ranging between max 63.1°F (17.3°C) and min 49.1°F (9.5°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a moderately hot 75.4°F (24.1°C) in September to an enjoyable 63.1°F (17.3°C). Weather in October »Weather in November
November, the last month of the autumn in South Plainfield, is also a fresh month, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 51.1°F (10.6°C). A decrease in the average high-temperature is observed during November, shifting from a comfortable 63.1°F (17.3°C) in October to a fresh 51.1°F (10.6°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in South Plainfield, New Jersey, with temperature in the range of an average high of 42.3°F (5.7°C) and an average low of 31.1°F (-0.5°C). In December, the meteorological conditions change slightly, with the average high-temperature moving from a fresh 51.1°F (10.6°C) in November to an icy 42.3°F (5.7°C). Weather in December »Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the month when South Plainfield sees the average lowest temperatures, with a high of 36°F (2.2°C) and a low of 23.9°F (-4.5°C).
Throughout the year, in South Plainfield, there are 160.7 rainfall days, and 30.12" (765mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
In South Plainfield, during the entire year, snow falls for 25.4 days and aggregates up to 10.31" (262mm) of snow.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
The months with the highest humidity are February, October and December, with an average relative humidity of 78%.
The month with the least sunshine is February, with an average of 4.6h of sunshine.
The month with the most snowfall is March, when snow falls for 5 days and typically aggregates up to 3.23" (82mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
April and August, with an average relative humidity of 73%, are the least humid months.
June through September are months without snowfall in South Plainfield.
The month with the longest days is June, with an average of 15h and 0min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
July, noted for its average high-temperature of 84.2°F (29°C) and an average low-temperature of 67.5°F (19.7°C), is considered the warmest month.
With an average of 10.5h of sunshine, July has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.69" (43mm) of precipitation.
December is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.19" (81mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
South Plainfield, NJ
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure
South Plainfield, NJ
- Average pressure in January:
30.07"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
South Plainfield, NJ
- Average wind speed in January:
8.8mph - Average wind speed in February:
8.7mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.8mph - Average wind speed in December:
8.1mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
South Plainfield, NJ
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall
South Plainfield, NJ
- Average rainfall in January:
1.97" - Average rainfall in February:
2.24" - Average rainfall in March:
2.64" - Average rainfall in April:
2.36" - Average rainfall in May:
2.8" - Average rainfall in June:
2.4"
- Average rainfall in July:
3.03" - Average rainfall in August:
2.6" - Average rainfall in September:
1.69" - Average rainfall in October:
2.83" - Average rainfall in November:
2.36" - Average rainfall in December:
3.19"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days
South Plainfield, NJ
- Average rainfall days in January:
9.5 days - Average rainfall days in February:
10.5 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
15.4 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
16.4 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
10 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.5 days).
Average snowfall
South Plainfield, NJ
- Average snowfall in January:
2.09" - Average snowfall in February:
2.87" - Average snowfall in March:
3.23" - Average snowfall in April:
0.2" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
South Plainfield, NJ
- Average snowfall days in January:
7.3 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
5 days - Average snowfall days in April:
0.6 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
4.1 days
The months with the highest number of snowfall days are January and February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
South Plainfield, NJ
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
South Plainfield, NJ
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
13.7 days - Average sunshine days in March:
14 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
15.8 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).
Average UV index
South Plainfield, NJ
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
South Plainfield, NJ
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility
South Plainfield, NJ
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
